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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Automatic heteroatomic plotting of high resolution mass spectral data, presenting relative intensity vs elemental composition in bar form
Polarization of nightglow, line vs continuum
Mixing function vs time relationship for liquid propellant explosion hazards prediction, noting thermocouple grid for maximum information
Tension stress and shearing strain vs time for simultaneous stress relaxation and creep in polyurethane
Compressional and shear wave velocities vs porosity for sintered perlite bricks
Space vehicle trajectory optimization using computerized step by step steepest descent to minimum cost, considering cost gradient vs control
Tension stress and shearing strain vs time for simultaneous stress relaxation and creep in polyurethane
Porous hydrophilic oxygen electrodes behavior, showing electrochemical reaction influence on shape of current density vs voltage curves
Rb-Sr isotopic determinations for Olivenza olivine-hypersthene chondrite, noting isotopic ratio vs age
Heat transfer to highly accelerated turbulent boundary layer with and without mass addition, presenting data in terms of Stanton number vs Reynolds number
Graphs and tables of thermocouples of Chromel, copper, platinum, and silver vs gold
A series of laboratory tests on simulated soils was conducted to evaluate some of these physical properties. Using soils similar to lunar soil composition, particle size distribution, and cohesion as determined from the Surveyor mission, the coefficient of friction and bulk density were evaluated by reproducing soils with the same force vs penetration characteristics as demonstrated at the Surveyor landing sites. The determination of soil coefficient of friction is presented in this paper; the soil density is treated separately in the previous paper’ of this report.
Although thermocouple calibration tables of emf (mv abs) vs temperature usually have enough significant digits for many purposes, the rounding errors often limit the use of these tables (and hence thermocouples) for precise measurements of temperature related effects such as thermal conductivity or specific heat. Fourteen calibration tables for common thermocouples from NBS Circular 561 and for cryogenic thermocouples from NBS Report 9712 were smoothed, and these are given in vol. 2 of this report. In this volume (vol.1), a general discussion of data smoothing techniques and a description of the procedures by which the smoothed tables were prepared are given.
Mass loss role in early despinning of sun without magnetic field braking effect, considering present surface vs core rotating velocity
Intensity vs voltage curves for LEED beams from clean Ni surface, calculating Bragg spectrum with energy diagram method
Analog data transmission over PCM telemetry link, comparing noncoherent FSK vs PSK reception performance for waveform error
Stellar atmosphere radiation field quantity vs quality, deriving electron temperature as function of tau
Passive microwave sensors based on brightness temperature vs frequency model for various atmospheric conditions, presenting vegetation pictures